How It Works

Three simple steps — your files stay on your device the entire time.

1

Pick Your File

Choose a file from your device or drag and drop it onto the tool. The file is read by JavaScript running inside your browser — it is never sent over the network.

2

Instant Local Processing

The tool processes your file right on your device using browser technologies like Canvas API, Web Audio API, and WebAssembly (FFmpeg, PDF.js, Tesseract). Processing speed depends on your device — most operations finish in seconds.

3

Download the Result

Once processing is complete, the output file is generated in memory and ready to download. Click the download button and save it anywhere on your device. No account or signup needed.

Why Client-Side Processing?

Traditional online tools upload your files to a remote server, process them, and send the result back. This is slow, raises privacy concerns, and requires you to trust the service. PrivaDeck takes a different approach: every operation runs in your browser. Your files never leave your device, there are no upload size limits, and the tools work even on slow connections.

Technology Under the Hood

Canvas & Web APIs

Image operations like crop, resize, and format conversion use the browser's native Canvas API for fast, GPU-accelerated rendering.

WebAssembly

Video and audio tools use FFmpeg compiled to WebAssembly, running natively in the browser at near-native speed. PDF tools use PDF.js and pdf-lib.

Modern Web Standards

We leverage File API, Blob URLs, Web Workers, and other modern standards to handle large files efficiently without blocking the UI.

Works Offline

Since no server is involved, most tools continue to work even when your internet connection drops — as long as the page is already loaded.

Want to learn more about how we protect your data? Read our Privacy Policy →